Battery charger



FIG. 1 is a top, front, right side perspective view of a battery charger showing our new design.

FIG. 2 is a top, rear, left side perspective view thereof.

FIG. 3 is a front elevation view thereof.

FIG. 4 is a rear elevation view thereof.

FIG. 5 is a top plan view thereof.

FIG. 6 is a bottom plan view thereof.

FIG. 7 is a right side elevation view thereof; and,

FIG. 8 is a left side elevation view thereof.

The dash-dash lines in the figures form no part of the claimed design. 

CLAIM The ornamental design for a battery charger, as shown and described. 